Signal-lamp



(No Model.) 2Y Sheets-Sheet 1.

0. S. CONKLI'N.

, SIGNAL LAMP.Y

No. 536,603. Patented Apr. Z, 1895.

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(No Model.) -2 sheets-Sheet. 2. O. S. CONKLIN.

` SIGNAL LAMP. N0. 536,603. l

Patented Apr. '2, 1895,.

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UNITED y'STATES g PATENT OFFICE. i'

OltANGrlilS. CONKLIN, OF JERSEY CITY, NEIV JERSEY.

SIGNAL-LAMP.

SPECIFICATION forming part of Letters Patent No. 536,60?, dated April 2, 1895.

Application filed September 14, 1894. Serial No. 522,973.' (No model.)

To all whom t may concern:

Be it known that I, ORANGE S. CONKLIN, of Jersey City, Hudson county, New Jersey, have invented an Improved Signal-Lamp, of which the following is a specification.

This invention relates to a railway signal lamp embodying various features of improvement, such as an improved air supply, animproved top, andl an improved reiiector, by which the rear light may be put into or out of action. Y

In the accompanying drawings: Figure 1 is a vertical section of my improved lamp on line 1, 1, Fig. 6. Fig. 2 is a similar section on line 2, 2, Fig. 6; Fig. 3, a rear-view of the reflector,

Fig. 4, a plan, showing the reflector connected to the back light; Fig. 5, a vertical central section through a modification of the lamp top; Fig. 6, a horizontal section of the lamp,

on line 6, 6, Fig. 1, and Fig. 7, a similar section on line 7, 7, Fig. 1.

The letter a, represents the body of a signal lamp made of suitable form and designed for any of the various uses to which railway lamps are put. Above the bottom a', of the lamp, I arrange a false bottom 0.2, upon which the oil reservoir b, is supported. Between the bottoms a', a2, there is formed an air chamber c, which is supplied with fresh air through a perforation or perforations c3, of bottom'a.

This perforation may, if desired, be protected and subdivided by a series of spaced parallel wires a4, as shown in Fig. 1. Above the perforations @3,1 secure tothe false bottom aia depending shield or deflector fm, beneath which a narrow air passage is formed. This passage connects with the larger end sections of the air chamber c, the object of the deflector being, to break the direct current of air and throw it sidewise, so that flickering will be prevented. Into the enlarged end sections of the chamber c, enter the lower ends of air delivery tubes c', that are adapted to feed fresh air from the chamber c, to the iiame. I employ two inverted U shaped air tubes c', that connect at both their ends with the chainber c (Fig. 2), and which are placed with their upright shanks within the corners of the lamp (Fig. 6). The perforations c2, of the tubes c are bored at such an angle, as to face outwardly and to conduct the air, not directly to the ame, but toward the sides of the lamp,

as indicated by the arrows in Fig. 6. In this way, the ame is supplied with air from all sides, and at the same time ickering is prevented. I have found that by this construction of air supply, the lamp is kept perfectly cool f'or an indefinite period of time, and thus a very desirable object is attained.

The side Walls of the detlector m, are perforated, so that a current of fresh air circulates through the chamber formed by said deflector and the false bottom a2. In this way the oil reservoir b, is cooled and overheating 0f the oil is prevented.

d, is the'front lens or semaphore, and e, the back lens which is secured within the center of the annular frame e and directly opposite the lens d. To the inner side of this frame is connected a reflector f, for increasing the volume of light emitted through the semaphore CZ. This reflector is so constructed, that the back light may by it, be shut o or eX- posed, and thus the lamp may be readily converted from a singlellight lamp, into a double light lamp. To effect this result the reiector f, is provided with a small central perforation f', that forms the mouth of a rearwardly extending flaring tube f2. This tube carries at pair of converging rails e2, connected to the back of lens frame e', at the sides of lens e, (Figs. 2 and et.) To attach the reflector to the lamp, its head f3, is slipped downward between the rails e2, while a reverse motion will disconnect the reiiector, as will be readily understood. The tube f2, is provided with a transverse slit f4, adapted for the passage of a lid or shutter f5, pivoted to an arm f6, of the tube. The openingf, and tubef, are in line with the lens e, and thus when the lid is swung across the tube, it will shut olf thelight from the lens and extinguish the back light, but when the lid is swung up to clear the tube, the light is free to pass to the lens, so that the back light will show. In this way the back light canbe quickly turned on or off. The top of thelamp is composed of an outer cylindrical shell g, and an inner shorter conical shell g', connected'to a joint corrugated roof g2, so as to leave an air outlet below the roof. The lamp body is provided with the upwardly projecting short conical tube a5, that flares toward its upper end. This tube enters its free end a head f3, adapted to engage a ICO the mouth ofthe conical tube g', (Fig. l) which flares toward its lower end and forms a tight joint with the tube a5. The tubes a5, g', jointly constitute a central exit flue for the hot gases and products of combustion. These gases pass through the open roof a, of the lamp body, and thence through the tubes d5, g', and out beneath the roof g2. The outer cylinder g, is perforated at its lower end as at g3, for the admission of fresh air,which is drawn up into the annular space g4, and thence out beneath the roof g2. The current of cool air is induced by the flow of the heated gases, and will serve to increase the draft aud also to cool the lantern top.

In Fig. 5, the outer cylinder g, is connected t-o the roof g2, by an open lap joint g5, by which any possibility of a back draft is avoided. It will be seen that my improved lamp is supplied with an abundant quantity of fresh air which furnishes oxygen for a perfect combustion. Thus the wick will not carbonize and the lamp will remain cool without regard to the period of time during which it has remained lighted.

What I claim isl. The combination in a signal lamp, of a perforated bottom with an upper false bottom to form an airchamber, a deilector within said chamber above the perforations, and with upwardly extending perforated tubes that enter the enlarged end sections of the air chamber and deliver the air into the body of the lamp, substantially as specified.

2. The combination in a signal lamp, of a front lens with a back lens placed in alignment therewith, a burner between the lenses, a perforated reflector between the burner and the back lens, a slitted conical tube projecting rearwardly from the reflector, and a shutter pivoted to said tube and adapted to engage the slit, substantially as specified.

3. The combination in a signal lamp, of a back light with a retaining frame, a pair of rails secured thereto, a perforated redector, a tube secured thereto, a head secured to the tube and adapted to engage the rails, and with` a shutter adapted to be projected across the tube, substantially as specified.

4. The combination in a signal lamp, of a conical inner tube g', with a roof having an inwardly and upwardly curled lower edge, a conical tube a5, that enters the tube g', anda perforated outer tube having au outwardly and downwardly curled upper edge,thatforms an open lap joint with the roof, substantially as specified.

ORANGE ooNKLrN.

Witnesses:

F. v. BRIEsnN, F. WM. DanssEL. 

